I can't quantify this, but the index seems to be worse in the last week. In particular, results beyond the fifth one often seem to be irrelevant. I didn't experience this before.
Steps to reproduce:
As an example, seaching for oakland zoo membership on Kagi has irrelevant/spam links after the first few.
The same search on Google does not have the issue.
I've noticed this with a lot of other queries recently, mostly on more niche non-technical topics.
Expected behavior:
I would expect all of the results on the first page to be relevant to the query term.
Debug info:
Firefox/Mac OS/US-WEST